Hi, I am suddenly having the problem where my trusty mac crashes upon waking up from the screen saver or sleep mode. It is most often happening when my kids are playing games and they go away, come back and it won't wake up. What is does do is get as far as the white screen and doesn't progress any further. I found a few threads on this but the suggestions were to disconnect any iPods (none attached) and to disconnect the iPhone (again, none attached.) I am running Os 10.6.8 on an iMac (which is about 6-7 years old) and have updated the browsers that I use. I am not sure if there are any tests I can run or where I should be looking for help in diagnosing this problem. Any suggestions?